* FTSE up 0.8 percent; UK corporate earnings awaited
* Drugmakers rise; U.S. reform seen as not so costly
* Banks, commods up; Greece deal, U.S. data supports
By David Brett
LONDON, April 26 (Reuters) - Investor confidence remained upbeat at midday on Monday as risk-sensitive banks and commodity stocks led Britain's top share index higher, ahead of a busy week for UK corporate earnings data.
By 1109 GMT, the FTSE 100 <
> was up 44.78 points, or 0.8 percent at 5,768.43, extending a 1 pct rally on Friday, but below Monday's intra-day peak of 5,800.66.Pharmaceutical stocks GlaxoSmithKline <GSK.L>, AstraZeneca <AZN.L> and Shire <SHP.L> were among the biggest risers, up 0.2 to 2.1 percent, with GlaxoSmithKline and AstraZeneca both due to post first-quarter earnings later this week.
"The reason we are up today is because of expectations of the biggest earnings week in the UK calendar on a quarterly basis ... This is the creme de la creme week," David Buik, senior partner at BGC Partners said.
Drugs companies also tracked gains made by their U.S. peers on Friday after Merck <MRK.N> eased concerns about the impact of healthcare reform, saying costs will be relatively low.
Banks extended gains made in the previous session after Greece announced it activated a rescue package with the IMF and Eurozone, and after strong U.S. home sales data painted a brighter picture of the world's biggest economy.
Barclays <BARC.L>, Royal Bank of Scotland <RBS.L> and Lloyds Banking Group <LLOY.L> climbed 2.8 to 4.7 percent.
Greece's finance minister said on Sunday that aid from the EU and IMF would arrive in time to avert what would be the euro zone's first sovereign debt default, although there were growing signs that a 45 billion euros ($60 billion) rescue package would have to be bigger. [
]The continued recovery in the U.S. economy helped lift metal and crude <CLc1> prices as investors saw the outlook for demand improving, boosting commodity issues.
Miners Rio Tinto <RIO.L>, Anglo American <AAL.L>, Antofagasta <ATNO.L> and Xstrata <XTA.L> rose 0.5 to 4.8 percent.
Energy stocks BG Group <BG.L>, BP <BP.L> and Cairn Energy <CNE.L> added 0.2 to 1.5 percent. BP and BG Group report first-quarter numbers later this week.
ENGINEERS ENGAGED
Invensys <ISYS.L> was the top FTSE 100 riser, adding 4.6 percent as investors alighted on the engineering group following some positive news from mid-cap peers Weir Group <WEIR.L> and Cookson <CKSN.L>, up 9.6 and 6.9 percent respectively.
Power protection firm Chloride <CHLD.L> was the top FTSE 250 <
> riser, however, 42.5 percent higher after U.S. industrials group Emerson Electric <EMR.N> made an indicative all-cash offer at 275 pence a share.Back with blue chips, on the downside, equipment testing company Intertek <ITRK.L> dropped 1.4 percent as it said it has pulled out of talks to buy risk management firm Det Norske Veritas's systems certification unit. [
]Britain's dominant pay-TV group BSkyB <BSY.L> topped the list of blue chip fallers, down 2 percent after Jeffries downgraded its rating to "hold" ahead of its third-quarter results, due on Thursday.
With no important UK or U.S. data released on Monday, the macro focus remained on Wednesday's interest rate decision from the Federal Reserve. (Editing by Rupert Winchester)